------- Comment From shigb...@in.ibm.com 2016-04-07 09:57 EDT------- (In reply to comment #12) > Hi, > > Below commits are now upstream and needs to be backported: > > 1) 3e5963bc343b3fb4ca045e9d1c14cb9ce89234b8 cpufreq: powernv: Define per_cpu > chip pointer to optimize hot-path > > 2)edd4a893e097d744e8069acf585f8b02dbbc9134 Revert "cpufreq: postfix policy > directory with the first CPU in related_cpus" > > 3) 1b0289848d5dcea74a6e5115d6c9892b0dbe9c8f cpufreq: powernv: Add sysfs > attributes to show throttle stats > > Should I open a new bug to backport these commits? Please advise. > > Thanks and Regards, > Shilpa
Making this comment external. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1555765 Title: Backport upstream bugfixes to ubuntu-16.04 Status in linux package in Ubuntu: Fix Released Status in linux source package in Xenial: Fix Released Bug description: Backport the below upstream "powernv-cpufreq" bug fixes to ubuntu 16.04: The below listed patchset is accepted upstream and is in linux-next. 1) 86622cb8c57abb05fe95bea3a068949c0ca79fc3 cpufreq: powernv: Free 'chips' on module exit 2) 6d167a44e6c8da3316e037b788585fcf96112bea cpufreq: powernv: Hot-plug safe the kworker thread 3) 96c4726f01cdbf53acf74cf2394e287d74bf40a3 cpufreq: powernv: Remove cpu_to_chip_id() from hot-path 4) 0306e481d479a58eff17c27adf213fbb5822946b cpufreq: powernv/tracing: Add powernv_throttle tracepoint 5)c89f2682a39192433c296bf97b834fd2815a758b cpufreq: powernv: Replace pr_info with trace print for throttle event Two more patches that are posted upstream: 6) http://marc.info/?l=linuxppc-embedded&m=145648325218686&w=2 7) http://marc.info/?l=linux-pm&m=145648316718658&w=2 1) Fixes a memory leak 2) Makes the worker thread hot-plug safe which is scheduled on an OCC event. 3) Fixes the below bug which cause 4% cpu overhead by powernv_cpufreq_throttle_check() function. 4.44% [k] _raw_spin_lock_irqsave | |--48.56%-- _raw_spin_lock_irqsave | | | |--72.55%-- of_find_property | | | | | |--62.14%-- of_n_addr_cells | | | __of_find_n_match_cpu_property | | | | | | | |--75.72%-- of_get_cpu_node | | | | cpu_to_chip_id | | | | powernv_cpufreq_throttle_check | | | | powernv_cpufreq_target_index | | | | __cpufreq_driver_target 4) , 5) and 7) are permanent fixes for BZ 131119, BZ 130125 which complained on the throttle message reporting 6) Fixes bug in powernv_cpufreq_{init/exit} To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1555765/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
